---
title: "Large Letters for the 8K, 2K Machine"
type: "article"
slug: "large-letters-for-the-8k-2k-machine"
url: "http://localhost/article/large-letters-for-the-8k-2k-machine/"
markdown_url: "http://localhost/article/large-letters-for-the-8k-2k-machine.md"
published_at: "2020-10-27T21:19:07+00:00"
modified_at: "2024-06-23T01:04:37+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "One tool that has been useful to me is a Basic subroutine to create 4x4 characters for the 8K ROM. The routine works well enough and enhances the display. However, it is slow. If used repeatedly, the delay can be irksome. The obvious solution is to write a machine language subroutine to do the work."
category:
  - name: "SYNC"
    slug: "sync"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/sync/"
post_tag:
  - name: "1982"
    slug: "year-1982"
    taxonomy: "post_tag"
    url: "http://localhost/tag/year-1982/"
  - name: "Machine language programming"
    slug: "machine-language"
    taxonomy: "post_tag"
    url: "http://localhost/tag/machine-language/"
  - name: "TS 1000"
    slug: "ts1000"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ts1000/"
  - name: "Type-in program"
    slug: "type-in-program"
    taxonomy: "post_tag"
    url: "http://localhost/tag/type-in-program/"
  - name: "ZX81"
    slug: "zx81"
    taxonomy: "post_tag"
    url: "http://localhost/tag/zx81/"
model:
  - name: "Sinclair ZX81"
    slug: "zx81"
    taxonomy: "model"
    url: "http://localhost/model/zx81/"
  - name: "Timex/Sinclair 1000"
    slug: "ts-1000"
    taxonomy: "model"
    url: "http://localhost/model/ts-1000/"
indiv:
  - name: "Joe Carroll"
    slug: "joe-carroll"
    taxonomy: "indiv"
    url: "http://localhost/indiv/joe-carroll/"
publication: "Sync"
publication_r:
  id: 10243
  title: "SYNC"
  type: "periodical"
  url: "http://localhost/periodical/sync-magazine/"
authors: "Joe Carroll"
volume: "2"
issue: "6"
issues_articles:
  - id: 26646
    title: "SYNC v2 n6"
    type: "issue"
    url: "http://localhost/issue/sync-v2-n6/"
pages: "65-70"
pubdate: "November/December 1982"
archive_link: false
volumeissue: "v2n6"
---

# Large Letters for the 8K, 2K Machine

One tool that has been useful to me is a Basic subroutine to create 4×4 characters for the 8K ROM. The routine works well enough and enhances the display. However, it is slow. If used repeatedly, the delay can be irksome. The obvious solution is to write a machine language subroutine to do the work.